lost tune?

:banghead:I had recently installed a maggie on my 04 gto, tuned it, got everything dialed in, and it sat for a month or so then drove it and the ses came on. checked codes and it showed fuel trims system rich on both banks, so i did a log and now all the ltft are at -14 to -10%. is it possible the tune could have got messed up because i did have to jump the car to get it started? Also now when adjusting my VE tables in the idle area where its about -10% will sutract like 4% then the car just cranks no start and my wideband is showing 18:1 AFR. any info would be apreciated.

dont know if its true or not but I have seen posted that for people without tuners disconnecting the battery for 1/2 hour or more will reset the fuel trims ?

Sounds like you have a mechanical issue of some sort, tunes don't change once they are flashed into the pcm.

I would set your VE table back to where it would start, and see if the fuel trims codes come back.

well I listend to bill and looked for a mechanical issue and I found that the fuel pressure was a little high 63psi and the pressure would drop off to 3psi when I shut the engine down. was able to trace the leak to back in the tank.
thank you much for your guys' in put!:doh: